1 /* 2 * Copyright (c) 2000-2005 Silicon Graphics, Inc. 3 * All Rights Reserved. 4 * 5 * This program is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU General Public License as 7 * published by the Free Software Foundation. 8 * 9 * This program is distributed in the hope that it would be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write the Free Software Foundation, 16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 17 */ 18 #ifndef __XFS_QM_H__ 19 #define __XFS_QM_H__ 20 21 #include "xfs_dquot_item.h" 22 #include "xfs_dquot.h" 23 #include "xfs_quota_priv.h" 24 25 struct xfs_inode; 26 27 extern struct kmem_zone *xfs_qm_dqtrxzone; 28 29 /* 30 * This defines the unit of allocation of dquots. 31 * Currently, it is just one file system block, and a 4K blk contains 30 32 * (136 * 30 = 4080) dquots. It's probably not worth trying to make 33 * this more dynamic. 34 * XXXsup However, if this number is changed, we have to make sure that we don't 35 * implicitly assume that we do allocations in chunks of a single filesystem 36 * block in the dquot/xqm code. 37 */ 38 #define XFS_DQUOT_CLUSTER_SIZE_FSB (xfs_filblks_t)1 39 40 /* 41 * Various quota information for individual filesystems. 42 * The mount structure keeps a pointer to this. 43 */ 44 typedef struct xfs_quotainfo { 45 struct radix_tree_root qi_uquota_tree; 46 struct radix_tree_root qi_gquota_tree; 47 struct mutex qi_tree_lock; 48 xfs_inode_t *qi_uquotaip; /* user quota inode */ 49 xfs_inode_t *qi_gquotaip; /* group quota inode */ 50 struct list_head qi_lru_list; 51 struct mutex qi_lru_lock; 52 int qi_lru_count; 53 int qi_dquots; 54 time_t qi_btimelimit; /* limit for blks timer */ 55 time_t qi_itimelimit; /* limit for inodes timer */ 56 time_t qi_rtbtimelimit;/* limit for rt blks timer */ 57 xfs_qwarncnt_t qi_bwarnlimit; /* limit for blks warnings */ 58 xfs_qwarncnt_t qi_iwarnlimit; /* limit for inodes warnings */ 59 xfs_qwarncnt_t qi_rtbwarnlimit;/* limit for rt blks warnings */ 60 struct mutex qi_quotaofflock;/* to serialize quotaoff */ 61 xfs_filblks_t qi_dqchunklen; /* # BBs in a chunk of dqs */ 62 uint qi_dqperchunk; /* # ondisk dqs in above chunk */ 63 xfs_qcnt_t qi_bhardlimit; /* default data blk hard limit */ 64 xfs_qcnt_t qi_bsoftlimit; /* default data blk soft limit */ 65 xfs_qcnt_t qi_ihardlimit; /* default inode count hard limit */ 66 xfs_qcnt_t qi_isoftlimit; /* default inode count soft limit */ 67 xfs_qcnt_t qi_rtbhardlimit;/* default realtime blk hard limit */ 68 xfs_qcnt_t qi_rtbsoftlimit;/* default realtime blk soft limit */ 69 struct shrinker qi_shrinker; 70 } xfs_quotainfo_t; 71 72 #define XFS_DQUOT_TREE(qi, type) \ 73 ((type & XFS_DQ_USER) ? \ 74 &((qi)->qi_uquota_tree) : \ 75 &((qi)->qi_gquota_tree)) 76 77 78 extern void xfs_trans_mod_dquot(xfs_trans_t *, xfs_dquot_t *, uint, long); 79 extern int xfs_trans_reserve_quota_bydquots(xfs_trans_t *, xfs_mount_t *, 80 xfs_dquot_t *, xfs_dquot_t *, long, long, uint); 81 extern void xfs_trans_dqjoin(xfs_trans_t *, xfs_dquot_t *); 82 extern void xfs_trans_log_dquot(xfs_trans_t *, xfs_dquot_t *); 83 84 /* 85 * We keep the usr and grp dquots separately so that locking will be easier 86 * to do at commit time. All transactions that we know of at this point 87 * affect no more than two dquots of one type. Hence, the TRANS_MAXDQS value. 88 */ 89 #define XFS_QM_TRANS_MAXDQS 2 90 typedef struct xfs_dquot_acct { 91 xfs_dqtrx_t dqa_usrdquots[XFS_QM_TRANS_MAXDQS]; 92 xfs_dqtrx_t dqa_grpdquots[XFS_QM_TRANS_MAXDQS]; 93 } xfs_dquot_acct_t; 94 95 /* 96 * Users are allowed to have a usage exceeding their softlimit for 97 * a period this long. 98 */ 99 #define XFS_QM_BTIMELIMIT (7 * 24*60*60) /* 1 week */ 100 #define XFS_QM_RTBTIMELIMIT (7 * 24*60*60) /* 1 week */ 101 #define XFS_QM_ITIMELIMIT (7 * 24*60*60) /* 1 week */ 102 103 #define XFS_QM_BWARNLIMIT 5 104 #define XFS_QM_IWARNLIMIT 5 105 #define XFS_QM_RTBWARNLIMIT 5 106 107 extern void xfs_qm_destroy_quotainfo(xfs_mount_t *); 108 extern int xfs_qm_quotacheck(xfs_mount_t *); 109 extern int xfs_qm_write_sb_changes(xfs_mount_t *, __int64_t); 110 111 /* dquot stuff */ 112 extern void xfs_qm_dqpurge_all(xfs_mount_t *, uint); 113 extern void xfs_qm_dqrele_all_inodes(xfs_mount_t *, uint); 114 115 /* quota ops */ 116 extern int xfs_qm_scall_trunc_qfiles(xfs_mount_t *, uint); 117 extern int xfs_qm_scall_getquota(xfs_mount_t *, xfs_dqid_t, uint, 118 fs_disk_quota_t *); 119 extern int xfs_qm_scall_setqlim(xfs_mount_t *, xfs_dqid_t, uint, 120 fs_disk_quota_t *); 121 extern int xfs_qm_scall_getqstat(xfs_mount_t *, fs_quota_stat_t *); 122 extern int xfs_qm_scall_quotaon(xfs_mount_t *, uint); 123 extern int xfs_qm_scall_quotaoff(xfs_mount_t *, uint); 124 125 #endif /* __XFS_QM_H__ */ 126